XPS 15 9550 trackpad / touchpad

I have the same rising touchpad problem as reported by at least one more user on 19 July in this forum. Internet search shows that this is a common problem with the XPS 9550 caused by battery inflation.

My 1 year guarantee has expired, but I would like to invoke my 2-year legal guarnatee as this is an error of the producer (having installed a battery that inflates in conditions of normal usage) that came with the product and only manifested itself later.